Overview
- The 21-month suspension is applied retroactively from March 10, 2024, and concludes on December 10, 2025.
- Portner may rejoin team training on October 10, 2025, with clearance for competitive matches starting December 10.
- Pending appeals at the Court of Arbitration for Sport and the Higher Regional Court in Cologne have been withdrawn.
- All parties affirmed there is no indication of intentional doping, citing evidence of unintentional contamination.
- Portner had resumed play after a temporary lift of his suspension and helped SC Magdeburg win the Champions League in June.